Baker s oven



(No Model.) 3 sheets-sheet 1.

' G. 1".sM1TH.

- BAKERS OVEN.

No. 575,911. PatentedJw. 26,- 1897.

d ff ai y' y Z A-r-r-DRNEY.

3 Sheets-Sheet 2.

Patented Jan. 26, l1897.

B if

X /PL Y IA nu E

m: nomme vertus ca muxa-Iwo wAsnmmoN n. f;

(NoModel.)

wrrNEsEs I v bS`M/5/m i 3 Sheets-Shet 3u (No Model.)

P. SMITH. BAKERS' ovl-3N.

Patented Jan. 26, 11897.

l .,l/ A 0 s A 1 A n m A \P www IT Nasse; i@ 152W; MM

UNITED STATES PATENT OFFICE.

GEORGE F. SMITH, OF BALTIMORE, MARYLAND.

BAKERS OVEN.

SPECIFICATION forming part of Letters Patent No. 575,911, dated January 26, 1897'. Application filed October 3,1896. Serial No. 607,737. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE F. SMITH, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Bakers Ovens, of which the 'following is a specilication.

This invention relates to an improved bakers oven. l

The objectis to provide a brick or tile bakeoven that can be fired while baking, for use of bakers, confectioners, and hotels.

The invention is illustrated in the accompanying drawings, in which- Figure l is a front elevation of the oven; Fig. 2, a vertical cross-section on the line 2 2 of Fig. G. Fig. 3 is a vertical longitudinal section on the line 3 3 of Fig. 9. Figs. 4 and 5 show the construction of the oven-bottom and oven-top, respectively. Fig. 6 is a horizontal section of the oven through the furnace on line 6 G. Fig. 7 is a horizontal section of the fines above the furnace, below the bottom of oven, on line 7 7. Fig. S is a horizontal section through the bake oven chamber on line S 8. Fig. 9 is a horizontal section through the flues on top of the oven on line 9 9.

The oven is made of brick. The furnace A is in the bottom and has an opening or door A through the front wall. At each side of the furnace is a rear-extending wall B, which does not connect with the back wall C,

furnace.

but a passage d is left open between the rear ends and said back wall. The two walls B form a central passage extending back from At the outer side of each of said walls B is a horizontal iiue E, extending from the said rear passage d to the front wall. These are the lowermost nues. Above the furnace and the said two lower ilues are the bottoms gof the two horizontal iiues H, (see Figs. 2, 3, and 7,) which are below the bottom of the oven-chamber. A central longitudinal wall 'a' separates these two flues, and these flues heat the bottom la of the oven-chamber. A vertical angular iue j connects from each lowermost flue E and extends in the wall B upward through the flue-bottom g into the iiue H. Above the two flues H is the tiled oven-bottom lo and the oven-chamber L, which latter hasan opening or door L in the front wall.

The oven-chamber has an arched top m, projected across from the two side walls N. This arched top contains broad horizontal flues. Alongitudinaldivision-wallieextends down the center and separates two iiues 0 o at one side from two at the otherlside. The two flues at each side are separated from each other by a partition q, extending from the front wall to near the back wall C, but leaving a passage r around the end of the said partition.

Two vertical flues s are provided at the front, one at each corner, and each communi- Cates from the lowermosJ horizontal flue E to the uppermost iue o in the top arch. By this construction the top of the oven is heated,'or at least the front part of the top, by currents of heat and products of combustion passing from the furnace through the rear passage d, iues E, and the vertical iues s into the uppermost flues o. These currents are indicated by darts in the drawings.

At the back are two vertical :dues t, which communicate from the iues H below the bottom of the oven-chamber to the dues o above the oven-chamber. By this latter construction in part the bottom of the oven is heated by currents of heat and products of combustion passing from the lowermost iues E through the vertical angular iiues j into the flues H below the oven-bottom and thence out by way of the back vert-ical flue to the iiues in the oven-top. These currents are indicated on the drawings by arrows.

The back fire-wall has a transverse dead- The construction of the hat oven-bottoni 7s' and arched oven-top m is shown in detail in Figs. 4 and 5. The bottom is madev of two IOO courses of tiles w, rsupported by T-shaped angle-bars ce, and the top is made of a single course of tiles y, which have grooved edges y and T-shaped angleebars 'e'. The lateral iian ges ofA these bars take into the said grooves and support the tiles without the exposure of the bars within the oven.

The i'lues II below the oven are shown in Fig. '7 to have ports H at the frontend for cleaning out said flues. These ports must of course be closed by caps or doors when the oven is in operation. The other horizontal iiues must also have ports at the outer wall to enable them to be cleaned. These ports are indicated in Fig. l.

Having thus describedl my invention, what I claiinis- A bake-oven having in combination the furnace, A, having at two sides a wall, B, extending rearward; a lower horizontal lue, E, at each outer side of said two walls; a rear open passage, d, connecting the central furnace-passage around the ends ofV the said walls, B, to each of the lower ilues; an ovenchamber; a longitudinal Hue, II, below the bottom of the oven-chamber; a longitudinal flue in the top of the oven-chamber; a vertical iiue, s, at the front communicating from the lowermost iiue to the uppermost flue in the top; a ilue, j, connecting the said lowermost iiue, E, with the iue below the bottom of the oven-chamber, and a vertical i'lue, t, communicating from the last-named iiue to the flue in the top of the oven-chamber.

In testimony whereof I affix my signature in the presence of tWo Witnesses.

GEORGE F. SMITH. NTitnesses:

CHARLES B. MANN, Jr., CHAPIN A. FERGUSON. 

